| 摘要 |
<p>A premixed burner (1) for a gas boiler is described comprising a diffuser (2), suitable for diffusing premixed combustion gases in a combustion chamber, and an ionisation sensor (3) suitable for monitoring the ionisation current, wherein at least one portion of the diffuser (2), at the ionisation sensor (3), has a radius of curvature r and in that the ratio between the distance d of the ionisation sensor (3) from the diffuser (2) in said at least one portion with radius of curvature r and the radius of curvature r is comprised between 0.015 and 0.6, said radius of curvature r being not greater than 30 mm.</p> |
